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Subject[2.6.0-test6] kernel BUG at mm/filemap.c:320!
This following bug was triggered by running rpm - it printed the list of
failed dependencies for my install command, but never returned to the
shell prompt.

The kernel is 2.6.0-test6 with the evms 2.1.1 patches applied
(md-multipath.patch, bd_claim.patch). The kernel thread that died is for a
RAID5 array made from partitions of 4 IDE disks. This array is divided to
several chunks for ext2 and reiserfs filesystems. The machine on which
this runs is a 2-way SMP box.

The machine is still alive, and I can log into it provided I don't touch
any filesystems on md1. If there are useful experiments that I can do
before rebooting, let me know.

ksymoops 2.4.9 on i686 2.4.20-20.8. Options used
-v vmlinux (specified)
-K (specified)
-L (specified)
-O (specified)
-m System.map (specified)

kernel BUG at mm/filemap.c:320!
invalid operand: 0000 [#1]
CPU: 1
EIP: 0060:[<c013dedf>] Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010246
eax: 00000000 ebx: c1340878 ecx: 00000017 edx: c15012dc
esi: 00000001 edi: dffc33a0 ebp: 00000001 esp: c1743ef0
ds: 007b es: 007b ss: 0068
Stack: c1340878 c3531960 c017c66f dfa28000 dffc33a0 dffc33a0 c044de60 00000000
c02bc7fe dffc33a0 00000000 00000000 01625378 dfd9e400 dfdc8160 00000001
dfad3284 d20ecd50 c03fba00 dab4b3a0 dfe160a0 dffcbe64 dffcbe60 00000000
Call Trace:
[<c017c66f>] mpage_end_io_read+0x5f/0x80
[<c02bc7fe>] handle_stripe+0x7fe/0xdd0
[<c02bd183>] raid5d+0x73/0x110
[<c02c4a3c>] md_thread+0xcc/0x1a0
[<c01205c0>] default_wake_function+0x0/0x30
[<c02c4970>] md_thread+0x0/0x1a0
[<c01092e9>] kernel_thread_helper+0x5/0xc
Code: 0f 0b 40 01 de 65 36 c0 8d 42 04 39 42 04 75 08 8b 5c 24 04


>>EIP; c013dedf <unlock_page+1f/50> <=====

>>ebx; c1340878 <__crc___neigh_event_send+21336/10f52f>
>>edx; c15012dc <__crc_xfrm_policy_register_afinfo+d286b/412b13>
>>edi; dffc33a0 <__crc_journal_unlock_updates+2789c4/6e926b>
>>esp; c1743ef0 <__crc_xfrm_policy_register_afinfo+31547f/412b13>

Trace; c017c66f <mpage_end_io_read+5f/80>
Trace; c02bc7fe <handle_stripe+7fe/dd0>
Trace; c02bd183 <raid5d+73/110>
Trace; c02c4a3c <md_thread+cc/1a0>
Trace; c01205c0 <default_wake_function+0/30>
Trace; c02c4970 <md_thread+0/1a0>
Trace; c01092e9 <kernel_thread_helper+5/c>

Code; c013dedf <unlock_page+1f/50>
00000000 <_EIP>:
Code; c013dedf <unlock_page+1f/50> <=====
0: 0f 0b ud2a <=====
Code; c013dee1 <unlock_page+21/50>
2: 40 inc %eax
Code; c013dee2 <unlock_page+22/50>
3: 01 de add %ebx,%esi
Code; c013dee4 <unlock_page+24/50>
5: 65 36 c0 8d 42 04 39 rorb $0x4,%ss:%gs:0x42390442(%ebp)
Code; c013deeb <unlock_page+2b/50>
c: 42 04
Code; c013deed <unlock_page+2d/50>
e: 75 08 jne 18 <_EIP+0x18>
Code; c013deef <unlock_page+2f/50>
10: 8b 5c 24 04 mov 0x4(%esp,1),%ebx

Peter
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